removed file ext from travis-checks file per shell styleguide & updated travis file
removed file ext from travis-checks file per shell styleguide & updated travis file

critzo/m-lab.github.io,m-lab/m-lab.github.io,m-lab/m-lab.github.io,critzo/m-lab.github.io,m-lab/m-lab.github.io,critzo/m-lab.github.io,critzo/m-lab.github.io,m-lab/m-lab.github.io